EASTON, Pa. (CBS/AP) — A Pennsylvania State Police trooper shot and killed a man after responding to a domestic dispute over the weekend, authorities said. Police were called Sunday afternoon to a home in Williams Township, near Easton, by a distraught, screaming woman, according to Northampton County District Attorney Terry Houck.

A trooper got to the home five minutes later and encountered 55-year-old Edward James Shadder, who was acting erratically, Houck said. The trooper shot him twice outside the home, killing him, according to state police.

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State police said in a news release that the shooting took place after a “confrontation,” but did not provide other details or say whether the man was armed.

The woman was unharmed.

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An autopsy is scheduled for Tuesday.

The shooting remains under investigation.

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The Associated Press contributed to this report. Stay with CBSPhilly.com for updates.